View source for 5qkn


==Group deposition of library data - Crystal Structure of EcDsbA after initial refinement with no ligand modelled (structure A5_2)==
<StructureSection load='5qkn' size='340' side='right'caption='[[5qkn]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5qkn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5QKN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5QKN FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.896&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5qkn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5qkn OCA], [https://pdbe.org/5qkn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5qkn RCSB], [https://www.ebi.ac.uk/pdbsum/5qkn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5qkn ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DSBA_ECOLI DSBA_ECOLI] Required for disulfide bond formation in some periplasmic proteins such as PhoA or OmpA. Acts by transferring its disulfide bond to other proteins and is reduced in the process. DsbA is reoxidized by DsbB. Required for pilus biogenesis. PhoP-regulated transcription is redox-sensitive, being activated when the periplasm becomes more reducing (deletion of dsbA/dsbB, treatment with dithiothreitol). MgrB acts between DsbA/DsbB and PhoP/PhoQ in this pathway.<ref>PMID:1429594</ref> <ref>PMID:22267510</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
A bottleneck in fragment-based lead development is the lack of systematic approaches to elaborate the initial fragment hits, which usually bind with low affinity to their target. Herein, we describe an analysis using X-ray crystallography of a diverse library of compounds prepared using microscale parallel synthesis. This approach yielded an 8-fold increase in affinity and detailed structural information for the resulting complex, providing an efficient and broadly applicable approach to early fragment development.

Rapid Elaboration of Fragments into Leads by X-ray Crystallographic Screening of Parallel Chemical Libraries (REFiLX).,Bentley MR, Ilyichova OV, Wang G, Williams ML, Sharma G, Alwan WS, Whitehouse RL, Mohanty B, Scammells PJ, Heras B, Martin JL, Totsika M, Capuano B, Doak BC, Scanlon MJ J Med Chem. 2020 Jun 24. doi: 10.1021/acs.jmedchem.0c00111. PMID:32529824<ref>PMID:32529824</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5qkn" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli K-12]]
[[Category: Large Structures]]
[[Category: Bentley MR]]
[[Category: Doak BC]]
[[Category: Ilyichova OV]]
[[Category: Scanlon MJ]]